Without yielding while loading kimage segments, a large initrd will block all other work on the CPU performing the load until it is completed. For example loading an initrd of 200MB on a low power single core system will lock up the system for a few seconds. To increase system responsiveness to other tasks at that time, call cond_resched() in both the crash kernel and normal kernel segment loading loops. Signed-off-by: Jarrett Farnitano <jmf@xxxxxxxxxx> --- kernel/kexec_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c index 5616755..8ee07d6 100644 --- a/kernel/kexec_core.c +++ b/kernel/kexec_core.c @@ -783,6 +783,8 @@ static int kimage_load_normal_segment(struct kimage *image, else buf += mchunk; mbytes -= mchunk; + + cond_resched(); } out: return result; @@ -847,6 +849,8 @@ static int kimage_load_crash_segment(struct kimage *image, else buf += mchunk; mbytes -= mchunk; + + cond_resched(); } out: return result; -- 2.7.4 _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
